How to allow access outside localhost

Question

How can I allow access outside the localhost at Angular2? I can navigate at localhost:3030/panel easily but I can not navigate when I write my IP such as

Answer 1

No package.json is necessery to change.

For me it works using:

ng serve --host=0.0.0.0 --port=5999 --disable-host-check

Host: http://localhost:5999/